SYMPOSIA PAPER Published: 01 January 2001
STP10553S

Behavior of Different Austenitic Stainless Steels, Conventional, Reduced Activation (RA) and ODS Chromium-Rich Ferritic-Martensitic Steels Under Neutron Irradiation at 325°C in PWR Environment

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The main objective of this paper is to summarize CEA data recently obtained on different kinds of steels irradiated at 325°C in the Osiris experimental reactor in a typical PWR environment, that is, pressurized water — P=155 bars — with controlled PWR type chemistry. The different steels studied can be classified in four groups: 304/316 type austenitic stainless steels, conventional 9–12%Cr(Mo,V,Nb) and reduced activation 7.5–11%Cr(W,V,Ta) martensitic steels, and two ferritic-martensitic alloys strengthened by oxide dispersion (ODS). Some of those steels have been included with different initial metallurgical conditions, that is, (1) for austenitic steels : solution annealed and cold-worked structures; (2) for martensitic steels : tempered, cold-worked and as-quenched martensitic structures. This experimental irradiation, named “Alexandre”, has been carried out in the Osiris experimental reactor (under a mixed fast/thermal neutron flux) for different neutron fluence levels with a maximum irradiation damage of ∼9dpa. The main results obtained are discussed, with a special emphasis on the chemical composition and initial metallurgical condition effects on the tensile and uniform corrosion properties of both conventional and reduced activation chromium-rich martensitic steels.

Author Information

Brachet, J-C
Commissariat à l'Energie Atomique, CEA-Saclay, Gif-Sur-Yvette, France
Averty, X
Commissariat à l'Energie Atomique, CEA-Saclay, Gif-Sur-Yvette, France
Lamagnère, P
Commissariat à l'Energie Atomique, CEA-Saclay, Gif-Sur-Yvette, France
Alamo, A
Commissariat à l'Energie Atomique, CEA-Saclay, Gif-Sur-Yvette, France
Rozenblum, F
Commissariat à l'Energie Atomique, CEA-Saclay, Gif-Sur-Yvette, France
Raquet, O
Commissariat à l'Energie Atomique, CEA-Saclay, Gif-Sur-Yvette, France
Bertin, J-L
Commissariat à l'Energie Atomique, CEA-Saclay, Gif-Sur-Yvette, France
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Details
Developed by Committee: E10
Pages: 500–520
DOI: 10.1520/STP10553S
ISBN-EB: 978-0-8031-5454-4
ISBN-13: 978-0-8031-2878-1